package com.yutel.thread;

import java.util.concurrent.ArrayBlockingQueue;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;

public class BlockingQueueTest {
	/** 定义装苹果的篮子 */
	public static class Basket {
		// 篮子,能够容纳3个苹果
		BlockingQueue<String> basket = new ArrayBlockingQueue<String>(3);

		// 生产苹果,放入篮子
		public void produce() throws InterruptedException {
			// put方法放入一个苹果,若basket满了,等到basket有位置
			basket.put("An apple");
		}

		// 消费苹果,从篮子中取走
		public String consume() throws InterruptedException {
			// take方法取出一个苹果,若basket为空,等到basket有苹果为止
			return basket.take();
		}
	}

	// 测试方法
	public static void testBasket() {
		final Basket basket = new Basket();// 建立一个装苹果的篮子
		// 定义苹果生产者
		class Producer implements Runnable {
			public void run() {
				try {
					while (true) {
						// 生产苹果
						System.out.println("生产者准备生产苹果: "
								+ System.currentTimeMillis());
						basket.produce();
						System.out.println("生产者生产苹果完毕: "
								+ System.currentTimeMillis());
						// 休眠300ms
						Thread.sleep(300);
					}
				} catch (InterruptedException ex) {
				}
			}
		}
		// 定义苹果消费者
		class Consumer implements Runnable {
			public void run() {
				try {
					while (true) {
						// 消费苹果
						System.out.println("消费者准备消费苹果: "
								+ System.currentTimeMillis());
						basket.consume();
						System.out.println("消费者消费苹果完毕: "
								+ System.currentTimeMillis());
						// 休眠1000ms
						Thread.sleep(1000);
					}
				} catch (InterruptedException ex) {
				}
			}
		}
		ExecutorService service = Executors.newCachedThreadPool();
		Producer producer = new Producer();
		Consumer consumer = new Consumer();
		service.submit(producer);
		service.submit(consumer);
		// 程序运行5s后,所有任务停止
		try {
			Thread.sleep(5000);
		} catch (InterruptedException ex) {
		}
		service.shutdownNow();
	}

	public static void main(String[] args) {
		BlockingQueueTest.testBasket();
	}
}